Parabolas+1B

=**Understand how to find the vertex of a parabola**=

y = (x -2)² -1
 * 1. Find the vertex of the following parabolas

2. Use the method of ‘Averaging the x-intercepts’ to find the vertex of the following parabola with and without graphing: y = (x-3)(x-11)**

=**Understand how to complete the square**=


 * 1. Plot enough points in order to create an accurate graph of the following equation: y= x²+ 6x + 7

2. Use the ‘ Completing the square method” to write the following equation in graphing form: y = x² + 7x +2**